Companies that use Customer.io

Source: Analysis of Linkedin bios of 2,026 companies that use Customer.io

I noticed that Customer.io attracts companies solving real-world problems through technology, often in spaces where customer relationships determine success. These aren't just SaaS companies. They include mental health platforms like Nourish and Midi Health, fintech services like Lydia and Collective, travel companies like Fora and Engine, healthcare providers like Care Access, and specialized marketplaces like Nivoda and Justlife. What unites them is that they're using digital platforms to deliver services that require ongoing engagement, whether that's booking travel, managing finances, accessing healthcare, or coordinating home services.

The funding signals tell me these are predominantly growth-stage companies. I count numerous Series B and Series C rounds, with funding amounts ranging from $40M to $140M. Even companies without recent funding rounds show employee counts in the 200-500 range, indicating they've moved past startup chaos into scaling operations. A few like HashiCorp and 23andMe are post-IPO, but the center of gravity is clearly companies that have found product-market fit and are now racing to capture market share.